Sliding-door latch and lock.



No. 810,927. l PATENTBD JAN. 301906.

G. G. EMMERT.

SLIDING DOOR LATCH AND LOCK.

APPLICATION FILED MAY15. 1905.

3 SHEETS-SHEET 1.

No. 810,927. PATENTED JAN.'30, 1906.

G. G. EMMERT. SLIDING DOOR LATCH AND LOCK.

APPLICATION FILED MAYl. 1905.

3 ,SHEETS-SHEET 2.

PATENTED JAN. 30, 1906.

G. C. EMMBRT. SLIDING DOOR LATGH AND 1.00K.

APPLICATION FILED MAY15, 1905.

3 SHEETS-SHEET 3.

GEORGEC. EMMERT, OFMOUNT MORRIS, ILLINOIS.

SLIDING-DOOR LATCH AND LOCK.

lSpecification of Letters Patent.

Patented Jan. 30, 1906.

Application led May l5, 1905. Serial Nc. 260,367.

acter of a simple and inexpensive nature and,

of a strong, compact, and durable construc-I tion, wherein there is no projection of the bolt;

' beyond the door when unl atched and wherein thrown into latching position. is also shown a fragment of the door-stile, to-

means of an improved and simplified charac-y ter are provided for throwing the latch-bolt to cause it to protrude from the door in latch-2` ing position and for retracting said bolt fiush with the door when the door is unlatched.

The invention consists in certain novel fea. tures of the construction, combination, and arrangement of the several parts of the im-A proved door latch and lock whereby certain important advantages are attained and theA device is rendered simpler, cheaper, and oth-` erwise better adapted and more convenient for use, all as will be hereinafter fully set forth.

The novel features of the invention will be carefully defined in the claims.

In the accompanying' drawings, which serve to illustrate my invention, Figure l-is a fragmentary view showing' portions of the meeting stiles of double slidingdoors provided with a latch and lock device embody- 'ing my improvements, and Fig. 2 is an enlarged sectional view taken on line a a of Fig. 1.` Fig. 3 is a fragmentary'view showing a portion of the rear surface of the escutcheonplate, together with the operating-slide carried thereby. Fig. 4 is a sectional view taken vertically through the latch-casing and showing the several parts of the improved latch in retracted or unlocked position. Fig. 5 is a View somewhat similar to Fig. 4 with certain parts of the device broken away and showing the latch device with its operative parts In this view Vlatch-bolt when thrown into latching posivices comprisedin the improved latch in the Figs. 5 and 6, but showing certain locking deposition in which they stand when operated v to lock the latch-bolt. Fig. 8 is an enlarged under side view of the latch-bolt, together4 with the several operative parts carried thereon. Fig. 9 is a face view showing a doorplate especially adapted for use in connection with the latch device. Fig. 10 is a fragmentary sectional view showing a casing connected with the latchlate and adapted for use in connection with ouble sliding doors. Fig. 11 is a view showing detached the adjustable auxiliarylatch-plate carried bythe doorplate seen in Fig. 10. A

Referring first to Fig. 1 of the views, 1 and 2 represent two sliding doors, the stiles of which are adapted when the doors are closed to fit flush upon each other, and 3 and 4 represent escutcheon-plates held upon the stiles of the doors in a well-known way and provided With central recessed portionsI 5 5, which are let into opposite sides of the respective stiles, as seen in Fig. 2. For use in connection with such double sliding doors metal casings 13 are preferably provided, which are mortised into the edge of the stile between the escutcheons, as seen in Fig. 2, the casing 13 of one of said doors-as, for example,vthe door l-containing the latch-bolt, with its operating and locking mechanisms, while the casing for the door 2 contains the devices for engagement with the latch-bolt when thrown into latching position and is connected with thelatch-plate having an adjustable auxiliary plate, as will be hereinafter explained. In the case of a single sliding door the last-mentioned casing may be omitted, the latch-plate and bolt-engaging parts connected therewith being mounted upon the jamb in position for engagement with the latch-bolt.

The central recessed portions 5 of the escutcheons form convenient finger-holds, by

means of which the door may be readily moved or slid into opened or closed position. Within said recessed parts of the escutcheons of the door 1 are extended ears or projections 6, produced upon actuating-slides 8 8, which are arranged for sliding movement transversely across the under or rear faces of the inwardly-directed portions of the escutcheons, being connected by outwardly-extend- IOG IIO

i tuating-sli'des 8 8 and directed toward the opposite surfaces of the casing 13, within which the operative latch mechanisms are held, said sockets being adapted to receive pins or studs 1 1 11, projecting through slotted openings 12 in the opposite walls of the casing, being carried upon a lever 14, pivoted, as seen at 15 in Fig. 4, at ythe lower part of the casing and adapted when moved to traverse a path alined with the direction of movement of the door itself when slid into opened and closed position. The lever 14 has its upper end adapted for engagement with certain devicesv upon the latch-bolt 19, which is guided for movement across the upper part of the casing, whereby said latch-bolt may be thrown in and out of latching position. The upper part of said lever 14 has also a curved portion 17, concentric with the 4key-apertures 18 in the casing and escutcheons 3 3, so that keys inserted at said apertures may be freely turned Without contact with said lever. 16 is a spring within the casing for holding -said lever in retracted position, as seen in Fig. 4, and said spring will also serve to hold the ears or projections 6 6 of the actuating-slides pressed into the recesses 5 in position for being conveniently engaged by the fingers.

The latch-bolt 19 is adapted for movement in a direction parallel with the path of the door when moved into opened or closed-position, and the casing 13 is provided with a door-plate 38, adapted to be let into the edge of the door-stile, as seen in Fig. 5, saiddoorplate 38 being provided with an opening 20,

bolt is adapted to play when moved into latching position. When the latch-b olt 19 is retracted, as seen in Fig. 4, its extremity fits snugly in said opening 20 to close the same, and the end surface of said bolt is flush with the door-plate 38, so that thereis no protrusion of the bolt such as might strike or catch upon persons passing the door or might be accidentally bent or broken to impair the utility of the device.

The extremity of the latch-bolt 19 is formed with a downwardly-directedv hook-like part 21, whereby an opening or space 22 is produced beneath said bolt at the rear of said hook-like part 21, and said downwardly-directed part 21 of the bolt is adapted for engagement with certain devices to be hereinafter explained for holding the bolt in latched ing doors.

position, while the opening or space 22 is adapted for the movement of certain releasing devices, whereby the latch-bolt may be released from said engaging devices and may be retracted within the casing 13. The latch-bolt 19 has a rear end portion 23 of reduced thickness, there being a shoulder 24 at the forward part of said reduced end portion and at one side of the bolt, as seen in Figs. 4, 5, 6, and 8, and a spring 33 has engagement with a pin at said reduced end 23 of the bolt in such a way that its tension is 4exerted to retract said bolt when released within the casing 13 in the position seen in Fig. 4. The latch-bolt 19 is also provided with downwardly-directed spaced lugs or forks 25 near its forward part,'and the lower ends of said forks or arms 25 are engaged to slide when the bolt is thrown and retracted upon a ledge 26 in the casing. At the upper part of the bolt 19 above the forks 2 5 there is produced a rearwardly-directed lug or shoulder 27, projecting from one side of the bolt, with its under side adapted for engagement with the forward end of a dog 29, pivotally held upon the side of the bolt, with a weighted rear end 31, which when said dog stands in its normal position, with its forward end 28 engaged beneath the shoulder 27, is adapted to depend in the position shown in Figs. 4 and 5, so as to be engageable by the pointed upper extremity32 of lever 14, whereby it will be evident that when said lever is moved by means of either of the actuating-slides 8, as above explained, its upper end 32 will come into engagement with the weighted extremity 31 of the dog 29 upon the side of the latch-bolt, so that the movement of said upper end of the IOC lever will be communicated to the bolt to throw the hook-like extremity 21 of the samev out beyond the door-plate 38 to the position shown in Figs. 5 and 6.

Where the improved latch device is used in connection with single sliding doors the arrangement of latch-plate and bolt-engaging means shown in Fig. 5 will be preferably employed,and, if desired, this arrangement may also be used in connection with double slid- As shown in said figure, there is a latch-plate 41 let into the door-jamb and held in place by means of screws or the like and provided with an opening 42,'formed in it in substantial alinement to receive the projecting end 21 of the latch-bolt when thrown, said opening 42 being, however, of a length suflicient to extend considerably above and below the extended end of the bolt, s0 that the latter will traverse the opening without necessity of accurate measurement in applying the plates 38 and 41 to the door and jamb.

43 represents an auxiliary adjustablelatchplate mounted for sliding movement lengthwise upon the rear surface of the plate 41 and provided with an opening 44, adapted for alinement with the opening 42 in plate-41,

IIO

but of a size adapted to snugly receive the hook-like end 21 of the latch-bolt when the same is thrown through said opening 42 in plate 41. At points opposite the screw attachments of the plate 41 the auxiliary plate 43 is provided with slotted openings 45, adapted to permit longitudinal adjustment of said auxiliary plate relatively to plate 41 when the screws of the latter are loosened, whereby the opening 44 in the auxiliary plate 43 may be adjusted to stand higher or lower without requiring resetting of plate 41 to compensate for inaccuracies of measurement in applying the parts to the door and jamb. In this way it will be seen that the auxiliary plate 43 may be raised or lowered sufficiently to permit its opening 44 to properly receive the hook-like end 21 of the latch-bolt when the same is thrown.

34 indicates an auxiliary bolt mounted for vertical sliding movement upon the rear surface of the auxiliary plate 43,with a beveled upper end extended normally above the lower edge of opening 44 inline with the path of the hook-like end 21 of the latch-bolt, so that the latter when thrown will ride freely over said beveled end of the auxiliary bolt 34 in passing through opening 44. The auxiliary bolt 34 is guided, as seen at 35, on the plate 43 and has a stem 36, whereon is coiled a spring 37, by means of which the auxiliary bolt is normally held uplifted, but is adapted to be depressed when engaged by the hooked end 21 of the latch-bolt. After the hooked end of the latch-bolt has reached the limit of its outward movement its lower face slips over the auxiliary bolt 34, which is thereupon permitted to rise under tension of spring 37, so that the auxiliary bolt is thereupon engaged in front of the hooked end 21 of the latch-bolt in opening or space 22 in such a way as to prevent retraction of the latch-bolt within casing 13 under tension of spring 33. By this arrangement it will be seen that when the actuating-slide 3 is operated to move lever 14 the latch-bolt will be thrown to cause its hooked end to traverse opening 44 and to be engaged by the auxiliary bolt 34, and thereby held, so that the door will then be securely latched, and in order to permit the door to be again opened it is essential to disengage the auxiliary bolt 34 from the hooked end of the latch-bolt, so that spring 33 may retract the same, for which purpose I employ other mechanism also operated from the actuating-slides 3 and lever 14 and which I will now describe.

The reduced rear end 23 of the latch-bolt 19 forms a guide whereon is adapted for lengthwise sliding movement a slide block or member 46, the lower part of which projects below the said reduced end 23 of the bolt and has support upon a lug 53 in the casing 13, being also provided with a forwardly-extended arm 54, which, as seen in Figs. 4, 6, and 8,

is extended beneath the latch-bolt 19 toward the hooked end thereof and between the lugs or forks 25 25 of the forward portion of said bolt. 55 is a pin extended between said lugs or forks 25 below said arm 54 and serving as a support therefor and also serving as a draft connection by engagement behind a downwardly-directed head 56, provided upon the forward end of the arm for compelling movement of the block or member 46 in unison with the bolt when the same is thrown into latching position.

57 represents a spring coiled on the arm 54 between the lugs 25 and the member 46 and exerting its tension to normally throw the said member 46 rearwardly upon the guide-arm 23 of the latch-bolt, so as to bring the head 56 of arm 54 in engagement with the pin 55; but it will be evident that upon compression of said spring 57 the member 46 may be moved forwardly upon the latch-bolt in such a way as to cause the headed end 56 of its arm 54 to move forward along the opening or space 22 behind the hooked end 21 of the latch-bolt until said headed end 56 of the arm 54 contacts with the beveled surface of the auxiliary bolt 34 in such a way as to depress the same to permit the release of the hooked end of the latch-bolt therefrom, so that the latter may be retracted within casing 13 by spring 33.

58 represents a notch or opening formed in the rear lower part of the hooked end 21 of bolt 19 to receive the extremity of the head 56 of arm 54, so that said head is caused to pass entirely across the top of the auxiliary bolt. parts are overcome and the release of the latch-bolt is rendered positivewhenever the member 46 is moved upon the guide 23.

59 represents an auxiliary dog pivotally held upon the lateral face of the member 46 and provided with an ear 60 for engagement with a stop projection or lug 61 on said member, so that normally the dog 59 is supported in the position shown in Figs. 4, 5, and 7, with its forwardly-extended arm 62 directed in front of the member 46 and in a plane above the weighted lower end 31 of the dog 29 on the latch-bolt. The auxiliary dog 59 is also provided with a downwardly-extended 'linger 63, behind which the pointed upper end 32 of the lever 14 is adapted to be engaged when the latch-bolt has been thrown intolatching position, the member 46 partaking, of course, of the forward movement of the bolt, so that saidiinger 63, which before was behind the normal position of lever 14, is moved into position in advanceof said lever,

as seen in Fig. 7. After the bolt 19 has been thrown into latched position the lever 14, being retracted by its spring, will pass beneath the nger 63, the forward side of which is rounded to produce a cam-surface to facilitate the liftngof the dog on retraction of In this way the effects of wear of the I ICO IIO

ISO

said lever. In this way it will be seen that when the latch-bolt is in latching position and lever 14 has been retracted a further forward movement of said lever will serve to impart forward movement to the member 46 relatively to the latch-bolt by engagement of the pointed upper end of such lever with the corresponding finger 63, and in this way the spring 57 will be compressed and the headed end 56 of arm 54 will traverse opening 22 and depress the auxiliary bolt 34 to release the latch-bolt 19, which will be immediately retracted within casing 13 by spring 33 but at the instant of release of the latch-bolt the forward extremity 62 of the auxiliary dog 59 is adapted to engage an upturned arm 30 upon the dog 29 of the latch-bolt, whereby said dog 29 will be pivotally moved in such a way as to elevate its weighted rear end 31 above the upper end 32 of lever 14, so that on the retraction of the latch-bolt said end 31 of the dog 29 will freely pass over the upper end of lever 14 and will not be engaged therewith to stop the rearward movement of the bolt under tension of its spring 33. Simultaneously the cam-surface on the forward side of the finger 63 of the auxiliary dog 59 will ride up on the said weighted rear end 31 of the latch-bolt dog 29 in such a way as to throw the auxiliary dog pivotally upward to disengage the finger 63 thereof from the pointed upper end 32 of lever 14, so that the rearward movement of the bolt is altogether unobstructed.

In connection with the mechanism above described I have provided means for holding the bolt 19 locked in its latching position,

and, as indicated in Figs. 4, 5, 6, and 7, such means comprises a locking plate or detent 49, extended for sliding movement in a vertical direction beneath the member 46, with its lower end guided for such movement upon a stud 49b in the casing and its upper end engaged against the supporting-stud 53, whereon the member 46 is rested. The said upper end of detent 49 has a finger 48 for engagement in a notch 47 in member 46 when the detent is upwardly moved, and the lower part of said detent is notched out, as seen at 50, for proper engagement with a key inserted at aperture 18, sov that movement of the detent may be effected on turning of said key. The upper end of detent 49 has two notches 49, adapted to be successively engaged by a tooth or projection 51 on a tumbler 51a, pivoted in casing 13 and pressed by a spring 52 to engage its tooth in said notches 49a of the detent, the tumbler having an edge surface projecting in a well-known way in the path ofa key inserted at aperture 18 and turned so that in the turning of said key the tumbler will be moved pivotally primarily to disengage its tooth from a notch 49a of detent 49, after which the detent will be slid endwise into locking or unlocking position, the spring 52 acting to engage the tooth of tumbler 51 with the other notch of the detent after the completion of the movement of said detent. By this arrangement it will be seen that when the latch-bolt is thrown into latching position and is held in such position by engagement of the auxiliary bolt with its hooked end so that the member 46, the notch 47 in which was previously out of alinement with the finger 48 of detent 49, is slid forwardly to bring said notch 47 into alinement with said finger, a key may be inserted at aperture 18 and when turned will operate to throw the detent upwardly to engage its finger in notch 47, whereby movement of member 46 relative to the bolt 19, such as is requisite to effect the disengagement .of auxiliary bolt 34 from the latch-bolt, is altogether prevented, and consequently the latch-bolt is effectively held in locked position until the key has been reversely turned to disengage finger 48 from the notch of member 46.

For convenience in sliding the door into closed position I have provided in the casing 13 a pull comprising a ring 64, adapted when not in use to be pushed within said casing, as seen. in Fig. 4, so that its forward edge is flush with the door-plate 38, said pull-ring having a stem guided on a stud 66 in the casing and actuated by a spring 67, the tension of which is exerted to normally press the ring 64 out from the casing in position for convenient engagement by the fingers, so that the door may be drawn out from its seat in the wall.

68 is a shoulder on stem 65, and 69 is a dog engageable therewith to hold the ring 64 when pushed Within the casing against withdrawal therefrom, said dog being pivoted in casing 13 and having an arm 71 and a spring 70 normally pressing the dog in engagement with the shoulder 68.

72 is a push-pin slidable in the casing below the ring 64, with its rear end engageable with the arm 71 of dog 69 and its forward end passed through an aperture in the door-plate 38, as seen at 73, so that said forward end may be pressed by the finger in order to throw dog 69 pivotally to disengage it from the shoulder 68 on the stem of ring 64, whereupon spring 67 is permitted to operate to push said ring out from the casing,

For simplicity and economy of construction it may be preferable to construct the casing 13 separately from the door-plate 38, and where this is done I prefer to employ the means shown in Fig. 4 for connecting said parts, said means comprising lugs 39, integral on plate 38 and perforated and projecting inside casing 13, the sides of which have perforations registering with those of lugs 39, so that pins or screws 40 may be passed through such perforations for securely holding the parts together.

Where the improved latch device is used upon double sliding doors, I prefer to provide' one door with the casing 13, connected with' the door or latch plate 41, as seen in Fig. 10, so that a ring 64a and push-pin 7 2a similar to that above described, may be held in such casing to permit convenient movement of the door out from the wall. In this construction the auxiliary plate 43a, carrying auxiliary bolt 34, is similar to the auxiliary plate 43, above described, except that its upper slot 45a is made long enough to receive the upper lug 39a, by means of which the plate 41 is held to the casing, and its lower slot 45b is also of increased length to-provide for the movement of parts 64'EL and 7 2a. The upper lug 39a is also preferably turned into a hori-` zontal position, so as to occupy less space and permit more complete movement of auxiliary plate 43a in adjusting the position thereof to bring opening 44 in alinement with the latchbolt on the other door.

From the above Vdescription it will be seen that the improved latch constructed according to my invention is of an extremely simple and inexpensive nature and is especially well adapted for use in connection with sliding ydoors, since there is no projection of the latch-bolt when the door is open, and, furthermore, the actuating means for latching and which reason I do not desire to be understood y as limiting myself to the precise form and arrangement of the several parts of the device herein set forth in carrying out my invention in practice.

Having thus described my invention, what l I claim, and desire to secure by Letters Pati latching position.

1. In a device of the character describedg the combination of a casing having a faceplate, a bolt housed in the casing with an extremity adaptedl to play through the faceplate and to stand, when the bolt is retracted, ilush with said face-plate, a spring connected with said bolt and arranged to retract it within the casing and means for moving said bolt against the tension of the spring to throw its extremity out from the face-plate.

2. In a device of the character described, the combination of a casing having a faceplate, a bolt housed in the casing with an extremity adapted to play through the faceplate and to stand, when the bolt is retracted, flush with saidface-plate, a spring connected vwith the bolt and arranged to retract it within the casing, means for moving the bolt against the tension of the spring to throw its plate having means for engagement with said extremity of the bolt when thrown out of the casing to hold the bolt in latching position.

3. In a device of the character described, the combination of a casing having a faceplate, a bolt housed in the casing with an extremity adapted to play through the faceplate, means for moving the bolt to throw its extremity out from the face-plate and a latchplate having means for engagement with said extremity of the bolt when thrown out of the casing to hold said bolt in latching position.

4. In a device of the character described, the combination of a casing having a faceplate, a bolt housed in the casing with an extremity adapted to play through the faceplate, means for moving the bolt to throw its extremity out from the face-plate, a latchplate and spring-actuated means carried plate having adjustable means for engagement with said extremity of the bolt when thrown out of the casing.

6. In a device of the character described,

the combination of a casing having a` faceplate, a bolt housed in the casing with an extremity adapted to play through the faceplate, means for moving the bolt to throw its extremity out from the face-plate, a latchplate having an opening of greater size than and adapted to be traversed by said extremity of the bolt when thrown out of the casing and a plate adjustably held` on said latch-plate and having means for engagement with said extremity of the bolt to hold the same in 7. In a device of the character described, the combination of a casing having a faceplate, a bolt housed in the casing with an extremity adapted to play through the faceplate, means for moving the bolt to throw its extremity out from the face-plate, a latchplate and a part carried thereon and movable in and out of engagement with said bolt and adapted, when engaged therewith, to hold the bolt in latching position.

8. In a device of the character described, the combination of a casing having a faceplate, a bolt housed in the casing with an extremity adapted to play through the faceplate, means for moving the bolt to throw its extremity out from the face-plate, a latchplate, a part carried thereon and movable in and out of engagement with said bolt and adapted, when engaged therewith, to hold -the boltY in latching position and mechanism IOC for moving said part to disengage it from the bolt to permit the same to be retracted within the casing.

9. In a device of the character described, the combination of a casing having a faceplate, a bolt/housed in the casing With an extremity adapted to play through the faceplate, a spring connected with the bolt to retract the same, means for moving the bolt against the tension of said spring to throw its extremity out from the face-plate, a latchplate, a part carried thereon and movable in and out of engagement with said bolt and adapted, when engaged therewith to hold the bolt in latching position against the tension of said spring and mechanism for moving said part to disengage it from the bolt to permit the same to be retracted within the casing.

10. In a device of the character described, the combination of a casing, a bolt adapted to be housed therein when in retracted position, a spring connected with the bolt for retracting the same, means outside the casing and adapted for engagement with the bolt Jfor holding it in latching position against the tension of said spring lwhen the bolt is thrown out of thecasing and mechanism adapted for successive actuation to first throw said bolt into latching position and to afterward operate said holding means to release the bolt therefrom,

11. In a device of the character described, the combination of a casing, a bolt adapted to be housed therein when in retracted position,

a spring connected with the bolt for retracting the same, means outside the casin and adapted for engagement with the bo t for holding it in latching position against the tension of said spring when the bolt is thrown, means for throwingl the bolt against the tension of said spring and mechanism for releasing the bolt from said holding means to permit the bolt to be retracted.

12. In a device of the character described, the combination of a casing, a bolt adapted to be housed therein when in retracted position, a spring connected with the bolt for retracting the same, means outside the casing and adapted for engagement with the bolt for 'holding it when thrown in latching position against the tension of said spring, means for releasing the bolt from said holding means to permit retraction of the bolt out of latching position and mechanismadapted for successive actuation iirst to throw the bolt against the tension of the spring and in engagement with said holding means and afterward to operate the releasing means to permit the bolt to be retracted within the casing.

13. In a device of the character described, the combination of a casing having a faceplate, a bolt housed in the casing with an extremity adapted to play through the faceplate, means Jfor moving the bolt to throw its extremity out from the face-plate, a strikingplate, means carried thereby for engagement with said extremity of the bolt when thrown out of the casing to hold the bolt in latching position and means for releasing the bolt from said holding means to permit retraction of the bolt out of latching position.

14. In a device of the character described,

.the combination of a casing having a faceplate, a bolt housed in the casing with an extremity adapted to play through the faceplate, means for moving the bolt to throw its extremity out from the face-plate, a strikingplate, means carried thereon for engagement with said extremity of the bolt to hold the bolt in latching position when' thrown, means for releasing the bolt from said holding means to permit retraction of the bolt out .of latching position and a locking device engageable with'said releasing means to hold the same from operation.

15. In a device of the character described, the combination of a casing having a faceplate, a bolt housed in the casing with a hooked extremity adaptedto play through the face-plate, means for moving the bolt to throw its hooked extremity out Jfrom the face-plate, a striking-plate and a springpressed auxiliary bolt connected therewith for engagement with the hooked end of said bolt for holding the same when thrown in latching position. v

16. In a device of the character described, the combination of a casing having a facelate, a bolt housed in the casing with a ooked extremity adapted to play through the face-plate, means for moving the bolt to IOO throw its hooked extremity out from theA face-plate, a striking-plate, a spring-pressed auxiliary bolt connected therewith for en- O#agement with the hooked end of said bolt Ior holding the same when thrown in latching position and means carried by the casing and adapted to be thrown therefromfor operative en agement with the auxiliary bolt to release t e same from engagement with said bolt to permit the same to be retracted within the casin A 17. In a evice of the character described, the combination of a casing having a facelate, a main bolt housed in the casing with a ooked extremity adapted to play through the face-plate, means for moving` said main bolt to throw its hooked extremity out from the face plate, a striking plate, a springpressed auxiliary bolt connected with said strikinglate for engagement with the hooked end of t e main bolt for holding the same 4Whenithrown in latching position and a mem- 'I IO same to disengage it from the hooked end of the main bolt to permit the same to be retracted within the casing.

18. In a device of the character described, the combination of a casing having a faceplate, a main bolt housed in the casing with a ooked extremity adapted to play through the face plate, a striking plate, a springpressed ,auxiliary bolt connected therewith for engagement with the hooked end of the main bolt for holding the same when thrown in latching position, a member movable in the casing with an arm adapted, when the member is moved, to be extended through the face-plate into engagement with said auxiliary bolt to move the same to disengage it from the hooked end of the main bolt and mechanism adapted for successive actuation -Iirst to move the main bolt into latching position and afterward to movevsaid member to throw the arm thereof into operative engagement with said auxiliary bolt Jfor the release of the main bolt therefrom.

19. In a device of the character described, the combination of a casing having a faceplate, a main bolt housed therein with an extremity adapted to be thrown out from the face-plate when the bolt is moved into latching position, a dog carried by said bolt, a lever pivoted in the casing and engageable with the dog to move the bolt into latching position, an escutcheon having a movable part and a connection between said movable part on the escutcheon and said lever within the casing for moving the lever in unison with said movable part.

20. In a device of the character described, the combination of a casing, a bolt housed therein with an extremity adapted to be thrown out oi the casing into latching position, a dog carried by said bolt, a lever pivoted in the casing and engageable with the dog to move the bolt into latching position, an escutcheon, an actuating-slide movably mounted on the escutcheon and provided with a socket and a projection on said lever and engaged with said socket of the actuating-slide for moving the lever in unison with said slide.

21. In a device of the character described, the combination of a casing, a bolt housed therein with an extremity adapted to be thrown out of the casing into latching position, a striking-plate an auxiliary bolt carried thereby Jfor engagement with the extremity of the main bolt when thrown into latching position, a member guided for movement on the main bolt and within the casing and having an arm adapted, when said member is moved upon the main bolt, to be extended out from the casingin engagement with the auxiliary bolt to actuate the same for releasing the main bolt, dogs pivoted respectively upon the main bolt and upon the member movable thereon and actuating mechanism comprising a lever engageable on successive operation Erst with the dog of the main bolt to move the same into latching position and second with the dog of said member for moving the same to engage its arm vilnh the auxiliary bolt for releasing the main In testimony whereof I have hereunto signed my name, at Byron, Illinois, this 11th day of May, 1905 in the presence of two subscribing Witnesses.

GEORGE C. EMMERT.

Witnesses:

HARRY ZELLER, RAY BARRIGK. 

